Improvement in upright steam-boilers



2 Sheets-Sheet 1.

G. MILES. Upright Steam-Boilers.

No. 214,171. Patented April 8,1879.

F1/y. l.'

Ln-ve ntor,

2 Sheets-Sheet 2.

G. MILES. t Upright Steam-Boilers. f

No. 214,171. Patented April 8,1879.

Inve for UNITED STATES PATENT OEEIGE.

GEORGE MILES, OF GBANTVILLE, MASSACHUSETTS.

IMPROVEMENT lN UPRIGHT STEAM-BOILERS.

Specification forming part of Letters Patent No. 214,171, dated April 8,1879 application filed October 3, 1878.

To all whom it may concer/n.:

Be it known that I, GEORGE MILES, of Grantville, of the county ofNorfolk and State of Massachusetts, have invented a new and usefulImprovement in Upright Steam-Boilers; and do hereby declare the same tobe described in the following specification and represented in theaccompanying drawings, of which- Figure l is a vertical and transversesection of the boiler, its furnace, and smoke flue or chamber; Fig. 2, ahorizontal section taken through the boiler and its tubes and theencompassing smoke-fine. Fig. 3 is a side elevation of the boiler,showing a section of the grid surrounding its neck. Fig. 4 is a top Viewof such grid.

My invention consists in the peculiar construction of an upright boiler,made of the parts hereinafter described, arranged and operatingsubstantially in the manner set forth.

In the drawings, A denotes an upright boiler, having projecting downfrom its bottom and into the former, as shown, a sediment-receivingchamber, B, and also having a blow-off pipe, C, extending from and outof the top of the dome of the smoke-chamber, and through the boiler, andinto the said sediment-chamber, nearly to the bottom thereof. Underneaththe sediment-chamber and lower end of the boiler is a nre-place, D,provided With a grate, a.. Over the lire-place, and encompassing theboiler, is the smoke-chamber E, which opens into the nre-place, andextends over the top of the boiler and around a tubular neck, F,arranged concentrically on such top and extending above it, and openinginto the boiler and a cylindro-conical steam drum or head, G, formed andarranged as represented.

Extending around theupper part of the aforesaid neck, and across the topof the smokechamber, is a grid, H, or a set of plates, H, perforatedwith numerous holes or slots, b, arranged in and around such at or aboutequal distances apart, the object of such grid being to equallydistribute the smoke and heat from the smoke-chamber within the dome Ithereof surrounding the steam-drum G, the said dome I having a conduit,c, leading laterally out of it; and, furthermore, there should be in thecrown of the dome a hole directly over a manhole, d, in the top of thesteam-drum.

The neck and the sediment-chamber I usually make equal, or about so, indiameter, and arrange in the boiler a series of tubes, K, extending fromtop to bottom of it, and opening through both top and bottom. Thesetubes I dispose in concentric ranges, as shown, and have the diameter ofthe inner range large enough for a person to get into the spaceencompassed by such range after irst passing down through the man-holeand the neck over such space.

The boiler-neck and steam-drum, fastened together, are suspended withinthe smokechamber and its dome by means of a series of brackets orstandards, L, fastened to the steam-drum, and extending therefrom, andstepped on the top of the brick-work M, in manner as represented.

The sediment that may gather in the boiler Will fall into the chamber B,and may be discharged therefrom with water of the boiler by the pressureof steam on opening the blow-off pipe, which, near its upper end, shouldbe provided with a stop-cock for closing it.

O are a series of stay-rods extending within the boiler, and from top tobottom of it, and fastened thereto.

In heating the boiler the smoke and hot volatile products of combustionpass from the fire-place up through the pipes of the boiler, and alsoaround the boiler, thence about the neck and through thedistributing-grid, thence against the conical bottom of the steam-drum,and are deilected thereby, and pass up around the cylindrical part andover the top of the drum, and finally are discharged by the conduit c,the boiler and its adj uncts being heated thereby to great advantage.

I do not claim the elements of the invention taken separately 5 but WhatI claim is- An upright steam-boiler suspended over a fireplace, D, in asurrounding case, M, on suitable brackets L, and consisting of a pot, A,provided with upright tlues K, through which the products of combustionpass, a sediment-chamber, B, projecting downward from the center of thebottoni of the boiler, and a applied over the surface of drum G, theWhole blow-olf pipe, C, located :is shown and de being constructed andarranged in the manscribe(l,oon1bined withastezun-drnm,G,plueed nerspeciled and shown.

in the dome I, and connected with the pot by :L tubular neck, F, andprovided with n man- GEORGE MILES hole, d, the neck F being surroundedby a "Vitnesses:

perforated sectional grid, H, through which R. Il. EDDY,

the products of combustion pass and areevenly S. N. PIPER.

